[maven-release-plugin] prepare branch rel-0.6
[maven-release-plugin] prepare branch rel-0.6

acourtneybrown/springfox,vmarusic/springfox,erikthered/springfox,maksimu/springfox,zorosteven/springfox,springfox/springfox,RobWin/springfox,arshadalisoomro/springfox,qq291462491/springfox,RobWin/springfox,maksimu/springfox,thomsonreuters/springfox,kevinconaway/springfox,RobWin/springfox,springfox/springfox,zhiqinghuang/springfox,ammmze/swagger-springmvc,jlstrater/springfox,namkee/springfox,yelhouti/springfox,izeye/springfox,zorosteven/springfox,cbornet/springfox,yelhouti/springfox,acourtneybrown/springfox,thomasdarimont/springfox,choiapril6/springfox,erikthered/springfox,thomsonreuters/springfox,acourtneybrown/springfox,wjc133/springfox,arshadalisoomro/springfox,ammmze/swagger-springmvc,springfox/springfox,zhiqinghuang/springfox,zhiqinghuang/springfox,qq291462491/springfox,cbornet/springfox,izeye/springfox,qq291462491/springfox,kevinconaway/springfox,namkee/springfox,wjc133/springfox,ammmze/swagger-springmvc,kevinconaway/springfox,yelhouti/springfox,springfox/springfox,choiapril6/springfox,vmarusic/springfox,thomasdarimont/springfox,erikthered/springfox,cbornet/springfox,namkee/springfox,choiapril6/springfox,jlstrater/springfox,vmarusic/springfox,izeye/springfox,thomsonreuters/springfox,arshadalisoomro/springfox,zorosteven/springfox,thomasdarimont/springfox,maksimu/springfox,wjc133/springfox,jlstrater/springfox